Kannika Boonwitien และ Saksit Rittilun; Ratchadaporn Ngoipoothon. (2022) Study the Problems Conditions and Guidelines on Operational Development as Professional Learning Community of Educational Institutions under Local Government Organization, Kalasin Province. <i>Interdisciplinary Academic and Research Journal</i>, <i>2</i>(5), 713-732.Kannika Boonwitien และ Saksit Rittilun; Ratchadaporn Ngoipoothon. "Study the Problems Conditions and Guidelines on Operational Development as Professional Learning Community of Educational Institutions under Local Government Organization, Kalasin Province". Interdisciplinary Academic and Research Journal 2 (2022):713-732.Kannika Boonwitien และ Saksit Rittilun; Ratchadaporn Ngoipoothon. Study the Problems Conditions and Guidelines on Operational Development as Professional Learning Community of Educational Institutions under Local Government Organization, Kalasin Province. DR.KEN Institute of Academic Development and Promotion:ม.ป.ท. 2022.